.footer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

/* footer.css */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #000000; /* 纯黑色背景 */
    color: white;
    padding: 1rem 2rem; /* 左右留白 */
    z-index: 999; /* 确保在内容之上，低于导航栏 */
    font-size: 0.9rem;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.3);
}

.footer p {
    margin: 0;
    text-align: left; /* 文字左对齐 */
}

.footer a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.footer a:hover {
    opacity: 0.8;
}